Wet sand blast apparatus



July 17, 1934.

G. WEBB WET SAND BLAST APPARATUS Filed July 19, 1930 3 Sheets-Sheet l July 17, 1934. 5, 555 1,966,571

WET SAND BLAST APPARATUS Filed July 19,1930 3 Sheets-Sheet 2 G. WEBB WET SAND BLAST APPARATUS Filed July 19, 1930 Jill 17, 1934.

3 Sheets-Sheet 3 S51 ml; 7 I I111} I Fig 5 4 24 L4 u' i 486 Y 6'8 6 b L N 37 386 i 4 fn sntar FEUEEZl/Ebfi Patented-July 17,1934 7 .oeefgeweb West H mel-e, com, assig'mr to 3i' Colls-"Patent l ire Arm's Manufacturing 00.,.

Hartford, Corm a corporation of Connecticut ramification July 19,1930, serial'nelisam M -01? Claims For some classes of'sandblasting work it is preferable to depart from the usual. practice of using-dry. sand and to. obtain the required abrasive efiect, by means'io fablast or jet of .a'

liquidniixture containingan abrasive, and the present yinvention, therefore; relates particularly to:an' apparatus wherein the-abrasive effect is secured by such a. liquid mixture. The procedure'whereby suchan abrasive mixture :isused I is commonlyyreferred to. as. mudblasting ll'ihe" genera-lobject of the invention istqprovide 'a'wet sand blast of mudbla'st apparatus having simple andreliable means tor maintaining the "liquid'jand abrasive mixture in proper condition fojr use; and for forcibly delivering it as .a blaster jet against the articles to, be treated. 1 j f A more specific object ofthe invention is to providewmeans I for rinsing. the articles aiter treatment by the, liquid. and abrasive, mixture, suchrihsirig means being combined with means ior'fpreventing' the'dilutiongot the mixture by h nsewa n I v Stillfanother specific object of the, invention is :tolprovide' an improved'means for preventing the sprayedliquidfand abrasive mixture from escap ing and forLpIeventingj'splashffrom the rinsing eansirom ent ering' the ma 'ip'ortion of the.

ho'usinglj 1 Still f nther "objects .of the invention will be apparent from theffollowing specification and claims.

Q. i In the accompanyin drawings 1 have shown the embodiment of theinvention which I now deem preferable; but it will be understood that the 'drawings are intendedifor' illustrative T pur poses cnly .and are '"t,tobeconstrued' as do;

finingiorlimitingthe"scope of the invention,

, the lainis fcr n'ing 'ia part. of this specification beingfrelied upon for that purpose.

' .j'-,Fi 1, is ai-perspective'view;or an. apparatus,

7 enibodyingthe invention;

' E 2 3 apls'n 0n.

" Fig. 2 f is an enlargedjcentral" vertical sectiojn ial v ew iithel app rat y the same scale asTFigi :2,' the" topjcover ofthe hood beingfoinitted in] order to showinterior parts;v v

v Fig. A is" a horizontal. sectional, view taken "along the lines 4+4 of; Fig's.,f 2' and 6.1 P'art's carried by orv connectedwiththe upper section of themain housing are omitted from this-view.

; {Fig.5 is agrmm in section along the miles-5 of Fig. 2.

f fiz a ,e dy gme srv sscfiolial w. e seyalo erhe s e 9 Fi .,Fig. '7 isan enlarged side view of one of the .no'zzlesior the liquid and abrasive mixture.

:Fig. 8 is an edge view of the nozzle shown in Fig. '7.

Referring to the drawings, l is a movable'work support, 2 is a housing substantially enclosing the work support, 3 is a reservoir. for a. mixture oiiliquid and abrasive, and 91, 4 are nozzles for delivering the liquid and abrasive mixture against articles on the work. support. These several parts and various other parts associated therewithiwill new hedescribed in detail. As shown the work support 1 is in'the form of a horizontal rotatable table, but it will be understood that the invention is not necessarilyliinitedto a work support of this particular type. The shape of the housing 2 will depend in part upon thecharacter of the, work. support, but when the work support is a rotary circular table as. shown, the lower section 5 of the said housing is preferably of semi circular shape at the rear as clearly shown Figs. 3. and 4. The lowersection 5 of the housing may be formed with the reservoir 3, the main portion ofthereservoir being'lbelow the bottom wall 6 of thesaid lower section; The position of the said bottom wall 6, makes it ,possible for liquids todrainfrom the housLng into the reservoir. The front of the lower section of the housing may be rectangular in shape to conform to the shape oi the reservoir 3 as shown iii-Figs. 3. and 4.

aThe'housing 2 and the reservoir 3 are supported upon a rectangular framework? having feet 8, 8. The reservoir rests directly upon' the iramework and the rear part of the housing issupportedthereonby means of rods .9, 9.

Theshousingzhasanzupper section or hood 10 which is preferably initially separate from -the ,-lowcr section. This upper section-10 is substantially cylindrical, andas shown it fits within the lower section, being supported by means ofiangle bars 11 secured to the walls thereof:tandgresting upon'the;top edges of the the-.- :lower secticn' 5 there is provided are nova fiat ver-4 wh ch ests o the to which is shaped-,toconformto the circular out line of the uppersection or hood 10. This cover edges of the-walls'of the-lower section fi and apparatus, the said tray being adapted to receive therinse water'and any abrasive carried thereby, and overflow meansfor the settling the reservoir and wherein the settling tray is 1 slidably supported upon the said rails.

13. An apparatus as set forth in claim 10, wherein the settling tray is readily movable to permit the abrasive contents thereof to be dumped into the reservoir, and wherein the overflow. means includes a drain basin in fixed position below the normalposition of the tray.

14. The combination in a Wet sand blast apparatus, of a rotatable horizontal work support, a nozzle positioned and'adapted to forcibly deliver a mixture of liquid and abrasive against articles carried by the 7 work support, a housingsubstantially enclosing the work support and the nozzle and having an opening in one side thereof through which articles'to be treated can be placed upon and removed from the work support, a flexible curtain within the housing providing a chamber adjacent. the said opening, and means in the said chamber adapted to deliver water against the articles on the work support so as to rinse them.

p 15. The combination in; a Wet sand blast apparatus, of a rotatable horizontal work support, a nozzlepositioned and adapted to forcibly deliver amixture of liquid-and. abrasive against articles carriedby the work support, a housing substantially enclosing-the work support and the nozzle andhaving an opening in' one side thereof through which articles to be treated can be placed upon and removed from the work support, a flexible curtain within the housing providing a chamber adjacent the said opening, means in the said chamber adapted to deliver water against the'articles on the work support 16. The combination in an apparatus of the class described, of a reservoir at the front for containing a liquid and abrasive mixture, means in the reservoir for agitating the mixture, a

housing open at the front and positioned with its front portion above the reservoir, a horizontal work support of openwork construction rotatable about a vertical axis and positioned in the housing with its'front portion above the reservoir and adjacent the front opening, means in .the rear portion of the, housing for with drawing abrasive mixture from the reservoir and forcibly delivering it against'articles on the rotary work support, a flexible curtain within the housing providing a chamber adjacent the said front opening, means in the said chamber sitioned to permit the waterto escape while the abrasive is retained.

GEORGE WEBB. 

